VGchartz numbers from exactly one year ago.
http://www.vgchartz.com/weekly/41616/Global/
-07th Dec 2013
WiiU - 4,342,060
PSV - 6,684,988
-6th Dec 2014
WiiU - 8m
PSV - 9.3m
Difrence last year was 2.3m and difrence now is 1.3m, at the end of 2014 difrence will be below 1m.
Wii U is 100% passing Vita in 2015.







